Display device comprising a color filter layer wherein a black matrix pattern, a red pixel pattern, and a green pixel pattern are disposed in different layers

Patent metadata

Field	Value
Publication number	US-9360698-B2
Application number	US-201314101774-A
Country	US
Kind code	B2
Filing date	Dec 10, 2013
Priority date	Jan 22, 2013
Publication date	Jun 7, 2016
Grant date	Jun 7, 2016

Abstract

A display device and a manufacturing method are provided. The display device includes a blue light backlight source and a liquid crystal display panel, and the liquid crystal display panel comprises a first substrate, a second substrate. The first substrate or the second substrate includes a color filter layer which includes a black matrix pattern and a red pixel pattern and a green pixel pattern. The red pixel pattern and the green pixel pattern are quantum dot material thin film patterns respectively emitting red light and green light under the excitement of blue light.

First claim

The invention claimed is:

1. A display device, comprising a blue light backlight source and a liquid crystal display panel, and the liquid crystal display panel comprising a first substrate, a second substrate and a liquid crystal layer between the first substrate and the second substrate, wherein,
the first substrate or the second substrate comprises a color filter layer which comprises a black matrix pattern and a red pixel pattern and a green pixel pattern,

wherein the black matrix pattern, the red pixel pattern and the green pixel pattern are disposed in different layers from each other;
a first passivation layer is provided between a layer where the red pixel pattern or the green pixel pattern is located and a layer where the black matrix pattern is located;
a second passivation layer is provided between the layer where the red pixel pattern is located and the layer where the green pixel pattern is located; and
the red pixel pattern and the green pixel pattern are quantum dot material thin film patterns respectively emitting red light and green light under the excitement of blue light.

2. The device according to claim 1 , wherein, the first substrate comprises a glass substrate and a color filter layer formed on the glass substrate, and the second substrate comprises a TFT array substrate; and the layer where the black matrix pattern is located is closer to the blue light backlight source side than the layer where the red pixel pattern is located and the layer where the green pixel pattern is located.

3. The device according to claim 1 , wherein, the first substrate comprises a glass substrate, and the second substrate comprises a TFT array substrate and a color filter layer; wherein, the layer where the black matrix pattern is located is closer to the blue light backlight source side than the layer where the red pixel pattern is located and the layer where the green pixel pattern is located.

4. The device according to claim 1 , wherein, a blue light filter layer is provided at sides of the red pixel pattern and the green pixel pattern opposite to the blue light backlight source.

5. The device according to claim 2 , wherein, a blue light filter layer is provided at sides of the red pixel pattern and the green pixel pattern opposite to the blue light backlight source.

6. The device according to claim 3 , wherein, a blue light filter layer is provided at sides of the red pixel pattern and the green pixel pattern opposite to the blue light backlight source.

7. The device according to claim 1 , wherein, the blue light backlight source is an LED backlight source.

8. The device according to claim 1 , wherein, the quantum dot material is a nano particle composed of II-VI group elements or III-V group elements.

9. The device according to claim 1 , wherein, the quantum dot material thin film pattern has a thickness of 10-30 nm.

10. The device according to claim 1 , wherein, the quantum dot material is ZnS, the quantum dot of the red pixel pattern has a size of 9-10 nm, and the quantum dot of the green pixel pattern has a size of 7-8 nm.

11. The device according to claim 1 , wherein, the black matrix defines a plurality of pixel regions, and the green pixel pattern and the red pixel pattern are respectively located in different pixel regions to form a green pixel region and a red pixel region.

12. The device according to claim 11 , wherein, the plurality of pixel regions further comprise a plurality of blue pixel regions in which the green pixel pattern and the red pixel pattern are not provided.

13. The device according to claim 1 , wherein, the blue backlight source is provided at the second substrate side of the liquid crystal display panel.

14. The device according to claim 2 , wherein, the blue backlight source is provided at the second substrate side of the liquid crystal display panel.

15. The device according to claim 3 , wherein, the blue backlight source is provided at the second substrate side of the liquid crystal display panel.

16. The device according to claim 11 , wherein, the blue backlight source is provided at the second substrate side of the liquid crystal display panel.

Assignees

• Beijing Boe Optoelectronics

Inventors

• Cai Peizhi
• Dong Xue
• Chen Xi
• Yang Dong

Classifications

• G02F2201/08

  light absorbing layer · CPC title

• G02F2202/108

  quantum wells · CPC title

• G02F1/133516

  Methods for their manufacture, e.g. printing, electro-deposition or photolithography · CPC title

• G02F2203/34

  Colour display without the use of colour mosaic filters · CPC title

• B82Y20/00

  Nanooptics, e.g. quantum optics or photonic crystals · CPC title